Rivet



(No ,Model.)

1VI. BRAY. RIVET.

No. 421,659. Patented Feb. 18, 1890.

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UNITED STATES PATENT OFFICE.

MELLEN BRAY, OF NEWVTON, MASSACHUSETTS.

RIVET.

SPECIFICATION forming part of Letters Patent No. 421,659, dated February18, 1890.

Application filed December 20, 1889- Serial No. 334,436. (No model.)

To all whom it may concern.-

Be it known that I, MELLEN BRAY, of Newton, in the county of Middlesexand State of Massachusetts, have invented certain new and usefulImprovements in Rivets, of which the following, taken in connection withthe accompanying drawings, is a specification.

My invention relates to rivets, and to that particular class of rivetswhich are made from solid wire; and it consists in certain novelfeatures of construction, arrangement, and combination of parts, whichwill be readily understood by reference to the description of thedrawings, and to the claims hereinafter given and in which my inventionis clearly pointed out.

Figure 1 of the drawings is aplan of a rivet embodying my invent-ion.Fig. 2 is an elevation of the same. Fig. 3 is an elevation viewed atright angles to Fig. 2. Fig. 4 is a sectional elevation, the cuttingplane being on line 00 m on Fig. 2; and Figs. 5 and 6 are respectively aplan and a central section of my improved rivet set in and securingtogether two pieces of leather or other material.

In the drawings, A represents my improved rivet provided with the heada, a short solid cylindrical section of a shank b, and twoclinching-prongs c c, forming prolongations of segments of saidcylindrical shank, with their outer surfaces parallel to the axis ofsaid cylindrical shank and their inner surfaces parallel to each otherin a transverse direction, but curved in a longitudinal direction, so asto form rounded cutting-edges at their ends, as at d d, and a slot orspace between them of greater width at or near their junction with saidshort cylindrical shank b, as at 6, than at or near the middle of theirlengths, as shown in Fig. 2. The slot between the prongs c c is widenedat its outer end to the full diameter of the wire from which the solidsection of the shank and said prongs are formed, thus formingcuttingedges on the ends of said prongs, presenting an ellipticaloutline when viewed at right angles to said slot, as shown in Figs. 3and 4.

December, A. D. 1889.

The enlargement of the inner end of the slot between said prongs, asshown at e, weakens said prongs at the point where it is desired theyshould bend easily when the same is being clinched.

The oval or rounded cutting-edges of the prongs c c render thempeculiarly adapted to pierce the material in which they are to be setwith the minimum of power applied thereto, and at the same time saidcutting ends are easily turnedbackward into the material, as shown inFigs. 5 and 6.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. A rivet made from solid wire having a short section of a cylindricalshank, a solid head formed on one end thereof, and two piercing-prongsforming prolongations of segments of said cylindrical shank, with theirouter surfaces parallel tothe axis of said.

shank and their inner surfaces parallel to eachother transversely or inthe direction of their width, and curved in the direction of 7 theirlength and having a greater distance between them at or near theirjunction with said cylindrical shank than at or near the middle of theirlengths.

2. A rivet made from solid Wire having a short section of a solidcylindrical shank, a solid head formed on one end thereof and on theother end two piercing-prongs, forming prolongations of segments of saidcylindrical shank, with their outer surfaces parallel to the axis ofsaid shank and their inner surfaces parallel to each other transverselyand curved in the direction of their length, said prongs having roundedcutting or piercing ends and a greater distance between them at or neartheir junction with said shank than at or near the middle of theirlengths.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 16th day of MELLEN BRAY.

Witnesses:

WALTER E. LOMBARD, C. A. MGCLURE.

